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Determine footing moment analysis for given demonstration.
Ans:
Assuming effective depth as d, Bending moment M at the face of column
M = ((273.60 x 2.80 x (1.40 - 0.205)2)/2kN-m
= 547 kN-m = 547 x 106N.mm
d = (M/kb)1/2
Here K is obtained from exact formed table, L = 2800 rnm
d = (547 x 106)/(2.76 x 2800)
= 266 mm
You can see that in this particular example, one way shear controls the thickness of the footings. Effective depth of 530 mm is selected.
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